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Iwazumi
Masanori Iwazumi, Irvine, CA US
| Patent application number | Description | Published |
|---|---|---|
| 20100016517 | POLYMERIZATION CATALYST FOR POLYTHIOURETHANE-BASED OPTICAL MATERIAL, POLYMERIZABLE COMPOSITION CONTAINING THE CATALYST, OPTICAL MATERIAL OBTAINED FROM THE COMPOSITION, AND METHOD FOR PREPARING THE OPTICAL MATERIAL - The polymerization catalyst for a polythiourethane-based optical material of the present invention includes a sulfonate represented by the following general formula (1). Furthermore, in the formula, R | 01-21-2010 |
| 20100029890 | POLYMERIZATION CATALYST FOR POLYTHIOURETHANE OPTICAL MATERIAL, POLYMERIZABLE COMPOSITION CONTAINING THE SAME, POLYTHIOURETHANE RESIN OBTAINED FROM THE COMPOSITION, AND PROCESS FOR PRODUCING THE RESIN - By using an amine hydrochloride represented by the formula (1) as a catalyst, a polythiourethane resin which is suitably used for a transparent resin for optical use, can be obtained without using an organotin compound which has been conventionally used as a catalyst for polythiourethane resins and without being affected by the acidity of an additive: | 02-04-2010 |
| 20110065884 | POLYMERIZATION CATALYST FOR POLYTHIOURETHANE OPTICAL MATERIAL, POLYMERIZABLE COMPOSITION CONTAINING THE SAME, POLYTHIOURETHANE RESIN OBTAINED FROM THE COMPOSITION, AND PROCESS FOR PRODUCING THE RESIN - By using an amine hydrochloride represented by the formula (1) as a catalyst, a polythiourethane resin which is suitably used for a transparent resin for optical use, can be obtained without using an organotin compound which has been conventionally used as a catalyst for polythiourethane resins and without being affected by the acidity of an additive: | 03-17-2011 |
| 20110112269 | POLYMERIZABLE COMPOSITION FOR POLYTHIOURETHANE OPTICAL MATERIAL, POLYTHIOURETHANE OPTICAL MATERIAL OBTAINED FROM THE POLYMERIZABLE COMPOSITION, AND POLYMERIZATION CATALYST FOR POLYTHIOURETHANE OPTICAL MATERIAL - The polymerizable composition for a polythiourethane optical material of the present invention includes (A) a polymerization catalyst for a polythiourethane optical material, (B) at least one compound selected from an isocyanate compound and an isothiocyanate compound, and (C) a compound containing one or more mercapto groups, wherein said polymerization catalyst for a polythiourethane optical material (A) includes (a1) a zinc compound, (a2) a compound represented by the following general formula (1), and (a3) a sulfonic acid represented by the following general formula (2): | 05-12-2011 |
Masanori Iwazumi, Fukuoka JP
| Patent application number | Description | Published |
|---|---|---|
| 20090310471 | Resin composition and optical component - There are provided a resin composition that is suitable for an optical component which, while maintaining moldability, low birefringence, heat resistance, mass productivity, mechanical strength, and light transmittance, hardly exhibits a low light transmittance during the use of a blue-violet laser beam source and a deterioration in optical properties, and an optical component produced by molding the resin composition, and a optical pickup device using the optical component. The present invention provides a resin composition comprising 0.05 to 5 parts by weight of the specific hindered amine compound based on 100 parts by weight of the polymer having an alicyclic structure in at least a part of repeating structural unit, an optical component produced by molding the resin composition, and a optical pickup device using the optical component. | 12-17-2009 |
| 20100234498 | INTERNAL MOLD RELEASE AGENT FOR PRODUCTION OF POLYTHIOURETHANE OPTICAL MATERIAL - Disclosed is an internal mold release agent for the production of polythiourethane optical materials, which is obtained by mixing an acidic phosphate ester compound and at least one metal selected from the group consisting of Zn, Cu, Fe, Ga, Bi, Al and Zr. The internal mold release agent for the production of polythiourethane optical materials contains the metal in an amount of 0.01 to 20 weight %. | 09-16-2010 |
Masanori Iwazumi, Omuta-Shi JP
| Patent application number | Description | Published |
|---|---|---|
| 20110190466 | POLYMERIZABLE COMPOSITION FOR POLYTHIOURETHANE OPTICAL MATERIAL - A polymerizable composition for polythiourethane optical materials comprising a compound represented by the general formula (1), | 08-04-2011 |